Larrie D. Ferreiro is an engineer, a historian, and the author of several award-winning books in history, science, and technology. He was the 2017 Pulitzer Prize finalist in history for his book Brothers at Arms. He teaches at George Mason University in Virginia and Stevens Institute of Technology in New Jersey.
David Colacci has been an actor and a director for over thirty years, and has worked as a narrator for over fifteen years. He has won AudioFile Earphones Awards, earned Audie nominations, and been included in Best of the Year lists by such publications as Publishers Weekly, AudioFile magazine, and Library Journal.